Optometer.



H. L. DE ZENG.

OPTOMETBR.

APPLICATION FILED nnc. 28.1908.

Patented Nov. 36, 1909.

4 SHEETS-SHEET 1.

H. L. DB ZENG.

OBTOMBTBR. APPLICATION FILED DEC. 29. 1908.

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H. L. 113 ZENG.

OPTOMETER. APPLIOATIO N FILED DEG. 29,1908.

Patented N0r.30,1909.

4 SHEETS-SHEET 4.

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HENRY L. DE ZENG, OF MAPLE SHADE, NEW JERSEY.

OPTOMETEE.

T all whom it may concern:

lie it known that I, HENRY L. DE Zeno, a

citizen of the United States, residing at Maple Shade, in the county of Burlington, State of ew Jersey, have invented a new and useful i lptometer, of which the following s a specification.

My invention relates to a new and useful optometer and consists, in suitably supporting series of spherical lenses of means for presenting the same in suitable position be fore the eye and of means for indicating what lenses have been so presented.

it further eonsics in mounting the said sp 'HiCtli lenses in casings and in adjustably mounting the casings.

it further consists in rotatably mounting a series oi? cylindrical lenses whereby the shine can be moved into position to co-act with the spherical lenses with means for independent axial rotation for each of the cylindrical lenses.

it. further consists in adjustably mounting a photometer whereby the same can be thrown into or out of operative position.

it further consi. a double rotary prism for making tests for abduction and addnction.

it further consists in pivotally mounting a l addox rod or corrugated glass dish whereby the same can be thrown into or out of operative position.

it further consists of novel details of con struction all as will be hereinafter set forth.

Fi ure 1 11; an opton'ieter embodying my inventionf l ig. 2 rcpt-(21mins a view showing the interior of one the cg lugs on an enlarged scale. l ig. represents a vertical sectional view ot one of the casings showing the manner of operating the two series of lenses. Fig. l represents a view on an enlarged scale, showing one of the rotatable disks containing cylindrical lenses. Fig. represents a section on line m r, Fig. 4. Fig. (3 represents a plant view of a portion of one (it the easin "arrving the. attachments. Fig. 7 repreents a front elevation of the optometer with the rotatable disks ren'ioved. Fig. 8 represents a side elevation of the device shown in Fig. 7. Fig. i) represents a sectional view ot the connection with the support. represents on a small scale the vcrnier innployed.

Similar numerals of reference corresponding parts in the figures.

indicate Specification of Letters Patent.

Application filed December 23, 1908.

in pivotally mounting.

represents a front elevation of Patented Nov. 30, 1909.

Serial No. 469,783.

Referring to the drawin 'sz In the present manner of testing eyes wherein lenses from a case are placed in a suitable holder before the eyes of a patient, it is difficult for the patient to remember the effect produced by the lensesfand to carry in mind which combination produced the best results. In addiion, considerable time is consumed and care must be exercised in replacing the lenses in the cases in their proper places. My invention is designed to overcome these defects and inthe drawings 1 have shown a device forming one embodiment of my invention and which I have found will operate successfully in practice but it will be evident that the arrangement of the parts may be varied, other instrumentalities may be employed and changes may be made in the construction which will come within the scope of my invention and I doinot, therefore, desire to be limited in every instance to the exact forms as herein shown and described but desire to make such changes as may be necessary.

My invention is designed'to be preferably carried upon a bracket or other suitable support in which 1 designates a rod adapted to be suitably connected with the bracket and on which rod or support the bars 2 extend on opposite sides of said rod, said bars being adapted to receive sleeves 3, Which are carried by oreonnected with the casings 4 and G designates a rod having right and left screw threads at suitable points thereon which are in suitable engagement with the casings 1- and 5 whereby it will be understood that by the proper rotation of the rod 6 the said casings 4t and 5 are caused to move toward or away from each other, sliding along the bars 2 as will be evident. The casings 4 and 5 are of any suitable construction and are provided with the two run 'ays or guides 7 and 8 in which are sit-ua'ted two series of spherical lenses 9 and 10 said lenses it being understood being mounted in suitable cells and one of the cells in each series being blank, that is to say, con tains no lens nor a plain glass and it being further understood that each series of lenses 9 and 10 are adapted for independent movement. The casings 4 and 5 are provided at asuitable point with openings through which the patient can see and through which the operator can examine into the patients eye and by proper manipulation of the se- .the hand of the operator for rotating the brought into register with the openings in ries of lenses 9 and 10 any of the lenses or the blank lens in the series can be brought into register with the openings in the casing so thatany combination of the lenses may be obtained as desired. 1

in order to obtain the independent operation of the lensesl have shown two spur wheels or sprockets 11 and 12 one of which as 11. is in threaded engagement with the thumb nut 13 which extends through the all of the casing and can be engaged by same, the teeth or spurs on the sprocket as will he more clearly understood from Fig. 2, being so arranged as to engage with the walls oi the lcnscells of the series 9 in order that by the rotation of the sprocket the entire series of lenses is caused to move in the race-way Y. The thumb nut 12?- providcd with a su table hole through which 5 3s a pin 14 which connected with the souwheel r sprocket and on which pin is UlOlUlttil a suitable thumb nut 13 whereby it will be understood that. by the rotation the thumb nut 15 movement will be impartcdto the pin 1 without imparting movement to the thumb nut so that the orocket wheel which is connected with the pin l lwill be operated and as the teeth of this sprocket are in suitable engagement with the len. lls of the series 1.0, the latter will be caused to move around the raceway 8 independently the lenses 9. From this it will. be seen that any lens in the series 9 can be positioned with'respect to the opening in the casing after which any of the lenses in the series it) can also he order that the various combinations of lenses may be quickly and expeditiously placed in conjunction for test of the eyes of the patient. in order to indicate what lenses in either series are in position, in reg ister with the opening, I have provided gear '13 which meshes" with teeth carted,

by or on the thumb nut 13 and whiclraiso meshes with a toothed disk 17 on which arc suitable indications, said disk 17 being rotatably mounted on the casing it being u'iiderstood that each of the casings 4 and 5 is provided with such disk and by the rotation of the thumb nut 13 the gear 16 is rotated which rotates the disk 17 and will indicate what lens of the series 9 is in position at the opening.

Mounted on the pin 14- upon the opposite side of the casing from that of the thumb nut 15 is the gear 18 which meshes with an idler 19 which rotatesa gear 20 carried on a pin 21 which passes through the casing and has a disk 22 thereon and adjacent the disk 17 which disk 22 is provided with suitable indications so that'by the rotation of the thumb nut l? the said disk 22 will be series 10 is in registerwith the openings in the casing. From this it will be understood that I have provided means for positioning lenses in register with an opening whereby any combination ot the same may be made and l have provided means for indicating what lenses in each series are in the operative position.

In order to provide means for positioning the cylindrical lenses with respect to the openings in the casing I mount clips 23 at suitable points on the casing which are adapted to engage with disks 2st, two of which it will be seen are mounted upon each of the casings l and 5, said disks having suitable openings therein in which are mounted the lens cells all but one of which in each disk contains a lens 26 so that said lenses are in series and one of said cells in each disk being blank or containing a -plain glass. Any suitable means for rotatably holding these cells and lenses in position on the disks may be employed and in the drawings l have shown the screws 7 for this purpose which prevent the cells from lcav- .ing their propel-position in the openings of their respective disks but permit axial ro tation thereot. Upon the cells are the teeth 28 so that the same can be engaged by hand or suitable means for axial rotation. In the present instance I have shown an arm 29 pivotally connected-with the frame, which carries pinion wheels 30 which are adapted to engage at the proper time or as desired, with the teetl 28 of any one of the cells in either of the disks when the cells are moved into proper position therefor, that is when they register with the openings in the casings, a handle 31 on the whcclsBO being provided for ease in rotating the same. Any number of clips 23 may be employed it only being necessary to have a suitable number, in order that the disks will be properly hcld in position on'the casing.

The "operation of the devices just de scribed wili be as follows :The disks 24 are rotated by hand causing the successive lenses to be brought into position in register with the openings in the casings 4 and 5 and any suitable means for indicating and hold ing the said disks in proper position in register with the openings ma be employed. In the drawings, l have siown a spring catch 32 for this purpose which engages with a suitable small notch in'the disk as each lens is properly positioned. After the desired lens in either or both disks on either casing (right or left) is in register with the openings in the cash the arm 29, which meantime has been swung away is moved into the position seen in full lines, Fig. l, causing the teeth thereof to engage with the teeth 28 of the le s cells 25 and by rotating the wheel axial rotation is given to the rotatcthand will indicate what, lens of the cylindrical lenses which are in proper posiwasher 136 form a supporting means for holding the sleeve 53 in connection with the bracket arm 57 and permit tree rotation between them.

In order to hold a spherical lens in the' visual line, any suitable means may be employed and in the drawings I have shown a spring arm 58 connectel with the casings and a suitable end passinq through ail-opening in the casings and adapted to be seated in any one of the openings 59 formed in the SPUI'KVllQGls 11 and [2, whereby it will be understood that the spur wheels will be prevented from rotation, also the .train of spherical lenses will be prevented from movement and the lenses in the visual line Will be held there. Any suitable means for indicating the axial rotation of the cylindrical lenses at the visual line may be employed and l. have shown in the drawings a Vernier (30, carried by an arm (11, connected at 62 with th casing, the said Vernier being situated adjacent the lenses, \vhicl are situated at the openings in the casings.

l desire it understood that While I have described my invention in relation to an optometer, it can be used in various optical instruments where the plurality of lens power is desirable.

I-laving thus described my invention, What I claim as new and desire to secure by Letters latcni, is:.

1. In an optical instrument, the combination of a suitable support, a phorometer, and a series of spherical lenses, the said spln rical lenses being;- mounted to be brought routinely into visual alinemcnt with the said phorometer.

In an optical instrument, the combination of a suitable support, a phoromctcr and a series of cylindrical lenses, the said cylindrical lenses being mounted to be brought routinely into visual alinement with the lenses of the said phorometer.

3. in an o )tical instrument, the combination of a suitable support, aphorometer, a series of spherical lenses and a series of cylindrical lenses, the said spherical lenses and the said cylindrical lenses being mounted to he' brought routinely into visual alinement with the lenses oi said phoronieter.

r. in an optical instrument, the combination of a suitable support, a double rotary prism and a series of herical lenses, the said spherical lenses being mounted to be brought routinely into visual alincment with the lenses of the double rotary prism. s

5. in an optical instrument, the combina-. t-ion of a suitable support, a double rotary prism and a series of cylindrical lenses, the said cylindrical lenses being mounted to {be brought routinely into visual alinement with the lenses of the said double rotary prism.

(3. in an optical instrument, the comhina= lion ot a suitable support, a double rotaiyl 'ing mounted to be brought routinely, into 9 prism, a series of spherical lenses and a series of cylindrical lenses, the said spherical lenses and the said cylindricallenses being mounted to be brought routinely into visual alinement with the lenses of the said double rotar prism. l

7. ii an optical instrument, the combination of a suitable support, a maddox rod and a series of spherieallenses, the said spherical lenses being mounted to be brought routinely into visual alinement with the said maddox rod.

8. In an optical instrument, the combination of a suitable support, a maddox rod and a series of cylindrical lenses, the said cyliir drical lenses being mounted to be brought routinely into visual alinement with the said maddox rod.

f). In an optical instrument, the combine tionof a smtable'support, a phorometer, a double rotary )rism and a series of spherical lenses, the sai( spherical lenses being mounted to be brought routinely into visual, alinement with the lenses of the said phoromcter and of the said double rotary prism.

10. in an optical instrument, the combination of a sin able support, a phorometer, a double rotary prism and a series of cylindrical lenses, thesaid cylindrical lenses be visual alinement with the lenses of the said phorometer and ofthe said double rotary prism.

11. In an optical instrun'ient, the combination of a suitable support, a horometcr, a maddox rod and a series of sp ierica'l lenses, the said spherical lenses being mounted to be brought routinely into visual alinement with the lenses of the said phorometer and with said maddox rod.

12. In an optical instrument, the combination of a suitable support, a phorometer, a maddox rod and a series of cylindrical lenses, the said cylindrical lenses being mounted to be broughtroutinel into visual alinement with the lenses of tie said phorometer and with 'said maddox rod.

13. In an optical instrument, the combination of a suitable support, a phorpmeter, a maddox rod, a double rotary prism and 2 .315 series of spherical lenses, the said S3h6ll0fil lenses being mounted to be brou t routinely into visual alinement with tiie lenses of the said phorometer with the lenses of the double rotary prism and with the said maddox rod. .i

' 14. In an optical instrument, the combination of it suitable support, a phoroxneter, a maddox rod, a double rotary prism and a se ries of cylindrical lenses, the said cylindrical lenses being mounted to be brought into tvis'ual alinement with the lenses of the said 9, orometer with the lenses of the double ary prism and with the said maddox rod.

5. 'In an optical instrument, the combination of' a suitable support, a phoron'ieter, a inaddox rod, a double rotary prism, series oi spherical lenses and a series of cylindrical lenses, the said spherical lenses and the said cylindrical lenses being inounted to be brought routinely into visual alinenient with the lenses of said phoronieter. the lenses of the said double rotary prism and with said inaddox rod.

16. in an optical instrument, a pluality ot' supports means for laterally adjusting said supports with respect to each other, a train of spherical lenses carried by each of said supports, and a phoronieter, the spherical le" being mounted to be brought routinely into visual alinenu-nt with thelenses of said phorometer.

17. in an optical instrun'ient, the combination of a suitable support, aphorometer ailjustably mounted whereby the same may be thrown into or out of operative pos tion, and a series of spherical lenses, the said spherical lenses being mounted to be brought routinely into visual alint-ainentwith the said phoronieter when the latter is in operative position.

In an optical instrument, the combina tion or a suitable support, a double rotary prism adjustably mounted whereby the same may be thrown into or out of operative positiorn and a series of spherical lenses, the said spherical lenses being mounted to be brought routinely into visual alinement with the said double rotary prism When the latter is in operative position. I

19. In an optical instrument, a plurality of supports, means for laterally adjusting said supports with respeot to each other, a train of cylindrical lenses carried by said.

supports, and phororneter, the cylindrical lenses being mounted to be brought routinely into visual alineinent with the lenses of said phorometer.

'20. In an optical instrument, the con1bina-- 21. In an optical instrument, the combination of a suitable support, a double rotary prism adpistably mounted whereby the smile i may be thrown into or out of operative position, and a series of cylindrical lenses, the said cylindrical lenses being mounted to be brought routinely into visual alinenient with the said double rotary prism when the latter is in operative position.

HENRY non ZENG \Vitnesses War. (Luann W rnnnasnmr, U. D. MGVAY. 

